diff options
Diffstat (limited to 'src/Compiler.h')
| -rw-r--r-- | src/Compiler.h | 49 |
1 files changed, 33 insertions, 16 deletions
diff --git a/src/Compiler.h b/src/Compiler.h index 44a87c7ba..3b4e9c8dc 100644 --- a/src/Compiler.h +++ b/src/Compiler.h @@ -20,34 +20,51 @@ #ifndef COMPILER_H #define COMPILER_H -#define GCC_CHECK_VERSION(major, minor) \ - (defined(__GNUC__) && \ - (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))) +#define GCC_MAKE_VERSION(major, minor, patchlevel) ((major) * 10000 + (minor) * 100 + patchlevel) #ifdef __GNUC__ -#define GCC_VERSION (__GNUC__ * 10000 \ - + __GNUC_MINOR__ * 100 \ - + __GNUC_PATCHLEVEL__) +#define GCC_VERSION GCC_MAKE_VERSION(__GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__) #else #define GCC_VERSION 0 #endif +/** + * Are we building with the specified version of gcc (not clang or any + * other compiler) or newer? + */ +#define GCC_CHECK_VERSION(major, minor) \ + (defined(__GNUC__) && !defined(__clang__) && \ + GCC_VERSION >= GCC_MAKE_VERSION(major, minor, 0)) + +/** + * Are we building with clang (any version) or at least the specified + * gcc version? + */ +#define CLANG_OR_GCC_VERSION(major, minor) \ + (defined(__clang__) || GCC_CHECK_VERSION(major, minor)) + +/** + * Are we building with gcc (not clang or any other compiler) and a + * version older than the specified one? + */ +#define GCC_OLDER_THAN(major, minor) \ + (defined(__GNUC__) && !defined(__clang__) && \ + GCC_VERSION < GCC_MAKE_VERSION(major, minor, 0)) + #ifdef __clang__ -# define CLANG_VERSION (__clang_major__ * 10000 \ - + __clang_minor__ * 100 \ - + __clang_patchlevel__) +# define CLANG_VERSION GCC_MAKE_VERSION(__clang_major__, __clang_minor__, __clang_patchlevel__) # if __clang_major__ < 3 # error Sorry, your clang version is too old. You need at least version 3.1. # endif #elif defined(__GNUC__) -# if !GCC_CHECK_VERSION(4,6) +# if GCC_OLDER_THAN(4,6) # error Sorry, your gcc version is too old. You need at least version 4.6. # endif #else # warning Untested compiler. Use at your own risk! #endif -#if GCC_CHECK_VERSION(4,0) +#if CLANG_OR_GCC_VERSION(4,0) /* GCC 4.x */ @@ -107,7 +124,7 @@ #endif -#if GCC_CHECK_VERSION(4,3) +#if CLANG_OR_GCC_VERSION(4,3) #define gcc_hot __attribute__((hot)) #define gcc_cold __attribute__((cold)) @@ -119,7 +136,7 @@ #endif /* ! GCC_UNUSED >= 40300 */ -#if GCC_CHECK_VERSION(4,6) && !defined(__clang__) +#if GCC_CHECK_VERSION(4,6) #define gcc_flatten __attribute__((flatten)) #else #define gcc_flatten @@ -128,7 +145,7 @@ #ifndef __cplusplus /* plain C99 has "restrict" */ #define gcc_restrict restrict -#elif GCC_CHECK_VERSION(4,0) +#elif CLANG_OR_GCC_VERSION(4,0) /* "__restrict__" is a GCC extension for C++ */ #define gcc_restrict __restrict__ #else @@ -141,12 +158,12 @@ #if defined(__cplusplus) /* support for C++11 "override" was added in gcc 4.7 */ -#if !defined(__clang__) && !GCC_CHECK_VERSION(4,7) +#if GCC_OLDER_THAN(4,7) #define override #define final #endif -#if defined(__clang__) || GCC_CHECK_VERSION(4,8) +#if CLANG_OR_GCC_VERSION(4,8) #define gcc_alignas(T, fallback) alignas(T) #else #define gcc_alignas(T, fallback) gcc_aligned(fallback) |